Question

Hypothesis Testing . It is claimed that the mean IQ of statistics instructors is greater than 120. Write the null and alternative hypothesis statements . A dean at JWU claims that the mean time for students to eam a Master's Degree in Business is at most 5.2 years. Write the null and alternative hypothesis statements. A researcher claims that 65% of voters favor gun control. Determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed The mean score for all NBA games during a particular season was less than 105 points per game. Identify the type I and type II errors for the hypothesis test of this claim. A candidate for governor of RI claims to be favored by at least half of the voters. If a hypothesis test is performed, how should you interpret a decision that fails to reject the null hypothesis? (eg. There is/is not sufficient evidence to support/reject the claim p ż 0.5)

Answer 1

Null hypothesis is the hypothesis which is being tested for the possible rejection, under the assumption that it is true .

Alternative hypothesis is the hypothesis which is accepted when null hypothesis is rejected.